Hiking the Ape Cave Lava Tubes



Upper Ape Cave (Mount St. Helens)

Last summer, I found myself standing at the mouth of a lava tube in Washington state. The August sun was was hot on my back, but as I looked down into the cave, the cold breeze, seemingly coming from the center of the earth itself, blew back at my face. I reached up, clicked my headlamp on and sent one last glance behind me before descending into the darkness.